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android - API 26 上的 SYSTEM_ALERT_WINDOW PERMISSION 未按预期工作。窗口类型 2002 的权限被拒绝

转载 作者:IT老高 更新时间:2023-10-28 22:23:30 28 4
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我正在使用覆盖权限在我的应用中显示某些信息。在 API 23 - 25 上运行它可以正常工作(根据

请求许可、授予等

Unable to add window android.view.ViewRoot$W@44da9bc0 -- permission denied for this window type )。 (非常感谢 ceph3us!)

在 API 26 上尝试相同的操作时出现错误,基本上是“调用时窗口类型 2002 的权限被拒绝”

windowManager.addView(frameLayout, params);

Google 改变了覆盖方式吗?任何想法,如何在 Android 8 (Oreo) API 26 中将我的文本叠加到屏幕上?感谢您的想法!

这是错误日志:

08-24 16:41:56.730 2615-2615/net.zwittscha.testoverlay E/AndroidRuntime: FATAL EXCEPTION: main
Process: net.zwittscha.testoverlay, PID: 2615
java.lang.RuntimeException: Unable to start activity ComponentInfo{net.zwittscha.testoverlay/net.zwittscha.testoverlay.MainActivity}:
android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@6fa0089 --
permission denied for window type 2002
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: android.view.WindowManager$BadTokenException:
Unable to add window android.view.ViewRootImpl$W@6fa0089 --
permission denied for window type 2002
at android.view.ViewRootImpl.setView(ViewRootImpl.java:789)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:356)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:92)
at net.zwittscha.testoverlay.MainActivity.createOnTopView(MainActivity.java:46)
at net.zwittscha.testoverlay.MainActivity.checkDrawOverlayPermission(MainActivity.java:66)
at net.zwittscha.testoverlay.MainActivity.onCreate(MainActivity.java:28)
at android.app.Activity.performCreate(Activity.java:6975)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) 
at android.app.ActivityThread.-wrap11(Unknown Source:0) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) 
at android.os.Handler.dispatchMessage(Handler.java:105) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:6541) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 

在我的 list 中,我有:

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

<uses-permission android:name="android.permission.ACTION_MANAGE_OVERLAY_PERMISSION"/>

这是我的 MainActivity:

    public class MainActivity extends AppCompatActivity {

DrawView dv;
FrameLayout frameLayout;
WindowManager windowManager;
LayoutInflater layoutInflater;
/** code to post/handler request for permission */
public final static int REQUEST_CODE = 1234;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
checkDrawOverlayPermission();
}

public void createOnTopView() {

WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.CENTER;

if (frameLayout == null) frameLayout = new FrameLayout(getApplicationContext());
if (dv == null) dv = new DrawView(getApplicationContext());

windowManager = (WindowManager)
getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
windowManager.addView(frameLayout, params);
windowManager.addView(dv, params);

layoutInflater = (LayoutInflater)
getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// Here is the place where you can inject whatever layout you want.
layoutInflater.inflate(R.layout.activity_main, frameLayout);
}

public void checkDrawOverlayPermission() {
/* check if we already have permission to draw over other apps */
if (android.os.Build.VERSION.SDK_INT > 22) {
if (!Settings.canDrawOverlays(this)) {
/* if not construct intent to request permission */
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
/* request permission via start activity for result */
startActivityForResult(intent, REQUEST_CODE);
}
else {
createOnTopView();
}
}
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
/* check if received result code
is equal our requested code for draw permission */
if (requestCode == REQUEST_CODE && android.os.Build.VERSION.SDK_INT > 22) {
/* if so check once again if we have permission */
if (Settings.canDrawOverlays(this)) {
createOnTopView();
}
}
}
}

这是 DrawView:

    public class DrawView extends View {

int w;
int h;
int r;
float screenFactor;
TextPaint startTextPaint;

public DrawView(Context activity) {
super(activity);
}

@Override
protected void onSizeChanged(int width, int height, int oldw, int oldh) {

w = width;
h = height;
r = w / 2;

screenFactor = (r / 160f);

if (startTextPaint == null) startTextPaint = new TextPaint();

startTextPaint.setTextSize(100);
startTextPaint.setTextAlign(Paint.Align.CENTER);
startTextPaint.setTypeface(Typeface.create("Roboto Condensed", Typeface.BOLD));

super.onSizeChanged(w, h, oldw, oldh);
}

@Override
protected void onDraw(Canvas canvas) {

startTextPaint.setARGB(255,255,0,0);
canvas.drawText("Test", w / 2, h / 2, startTextPaint);
}
}

最佳答案

根据 Android 8.0 Behavior Changes 上的文档对于面向 Android 8.0 的应用:

Apps that use the SYSTEM_ALERT_WINDOW permission can no longer use the following window types to display alert windows above other apps and system windows:

TYPE_PHONE
TYPE_PRIORITY_PHONE
TYPE_SYSTEM_ALERT
TYPE_SYSTEM_OVERLAY
TYPE_SYSTEM_ERROR

Instead, apps must use a new window type called TYPE_APPLICATION_OVERLAY.

因此您的应用可以针对某些较低版本。在这种情况下,您的警报窗口将...

always appear beneath the windows that use the TYPE_APPLICATION_OVERLAY window type. If an app targets Android 8.0 (API level 26), the app uses the TYPE_APPLICATION_OVERLAY window type to display alert windows.

(引自同一来源)

关于android - API 26 上的 SYSTEM_ALERT_WINDOW PERMISSION 未按预期工作。窗口类型 2002 的权限被拒绝,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45867533/

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